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https://issues.apache.org/jira/browse/AMBARI-21161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16041118#comment-16041118
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Di Li commented on AMBARI-21161:
--------------------------------
org.apache.ambari.server.state.UpgradeHelperTest test with my changes passed
locally when I ran it.
The following unit tests also failed without my changes
org.apache.ambari.server.controller.internal.ConfigGroupResourceProviderTest
org.apache.ambari.server.controller.AmbariManagementControllerImplTest
org.apache.ambari.server.controller.AmbariManagementControllerTest
> Able to safe guard Ambari server against circular dependencies in role
> command order
> ------------------------------------------------------------------------------------
>
> Key: AMBARI-21161
> URL: https://issues.apache.org/jira/browse/AMBARI-21161
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: trunk
> Reporter: Di Li
> Assignee: Di Li
> Priority: Critical
> Fix For: trunk
>
> Attachments: AMBARI-21161.patch, AMBARI-21161-v3.patch
>
>
> It is important to safe guard against cycle graphs, when Ambari supports
> mpacks, custom services and service level role command order. Cycle graphs
> indicate circular dependencies that can cause Ambari enter an infinite loop
> while building stages, causing Ambari server to take up 100% CPU and large
> amount of memory.
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